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c5992119fc
Allow unaligned 16-byte memop codegen for btver2. No functional changes for any other subtargets. Replace the existing supposed small memcpy test with an actual test of a small memcpy. The previous test wasn't using FileCheck either. This patch should allow us to close PR21541 ( http://llvm.org/bugs/show_bug.cgi?id=21541 ). Differential Revision: http://reviews.llvm.org/D6360 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222925 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
810 B
LLVM
26 lines
810 B
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core2 | FileCheck %s --check-prefix=CORE2
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=nehalem | FileCheck %s --check-prefix=NEHALEM
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=btver2 | FileCheck %s --check-prefix=BTVER2
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1)
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define void @copy16bytes(i8* nocapture %a, i8* nocapture readonly %b) {
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 16, i32 1, i1 false)
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ret void
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; CHECK-LABEL: copy16bytes
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; CORE2: movq
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; CORE2-NEXT: movq
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; CORE2-NEXT: movq
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; CORE2-NEXT: movq
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; CORE2-NEXT: retq
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; NEHALEM: movups
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; NEHALEM-NEXT: movups
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; NEHALEM-NEXT: retq
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; BTVER2: movups
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; BTVER2-NEXT: movups
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; BTVER2-NEXT: retq
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}
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